Ahrar ash-Sham

Ahrar ash-Sham is a brigade of 20,000 Salafi Islamist rebels founded in 2011 during the Syrian Civil War with the goal of taking down the Syrian Arab Republic Ba'ath Party socialists and replacing the republic with an Islamist state. They are allies of the Al-Nusra Front, Jaysh al-Islam, Mujahideen Army, Suqour al-Ezz, Sham Legion, Harakat Sham al-Islam, and Jaish al-Mujahireen wal-Ansar, while they are enemies of the Syrian Arab Army, Free Syrian Army, Islamic State, and the US Army.

History
Ahrar ash-Sham was founded in 2011 by Hassan Aboud just after the Egyptian Revolution and before the Syrian Civil War, and its leaders were Islamist political prisoners. Its ideology is Salafist jihadism and Sunni Islamism, and their base of operations is Babsaqa in Idlib Governorate, Syria. Since September 2012, Ahrar ash-Sham has been involved in every major rebel victory over the Syrian government. The organization allied with al-Qaeda's Al-Nusra Front front, and fought against the United States-backed Free Syrian Army. However, they also fought against the fierce terrorist Islamic State of Iraq and Syria (ISIS), a powerful enemy to all sides of the conflict. Nevertheless, their support of al-Qaeda jihadists led to the US Air Force killing their weapons receiver Abu al-Nasr on 6 November 2014 and bombing their bases in addition to Khorasan Group, ISIS, and Al-Nusra bases.